Summary: A&A manuscript no.
(will be inserted by hand later)
Your thesaurus codes are:
06 (08.01.1; 08.03.2; 08.09.2 LSS3184)
Spectral analysis of the extreme helium star LSS 3184 ?
J.S. Drilling 1 , C.S. Jeffery 2 , and U. Heber 3
1 Dept. of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA.
2 Armagh Observatory, College Hill, Armagh BT61 9DG, Northern Ireland.
3 Dr. RemeisSternwarte, Universit¨at ErlangenN¨urnberg, D96049 Bamberg, Germany.
Received 17 October 1996; accepted 14 August 1997
Abstract. LSS 3184 is a hydrogendeficient, early Btype
giant, recently found to pulsate with a period of 2.5 hours.
Its photospheric parameters have been derived from opti
cal highresolution spectra by the method of fine analysis.
The principal results are T eff = 23 300 K, log g = 3:35,
nH = n He ! ¸ 0:00015, nC=n He = 0:003, nN=n He = 0:0005,
and nO = n He = 0:0003. Hydrogen is extremely deficient.